/*******************************************************************
 *
 *  ttmutex.c                                                1.0
 *
 *    Mutual exclusion object, single-threaded implementation
 *
 *  Copyright 1996-1999 by
 *  David Turner, Robert Wilhelm, and Werner Lemberg.
 *
 *  This file is part of the FreeType project, and may only be used
 *  modified and distributed under the terms of the FreeType project
 *  license, LICENSE.TXT.  By continuing to use, modify, or distribute
 *  this file you indicate that you have read the license and
 *  understand and accept it fully.
 *
 *  NOTE:  This is a generic non-functional implementation
 *         that you are welcome to refine for your own system.
 *
 *         Please name your system-specific source with a
 *         different name (like ttmutex-os2.c or ttmutex-linux.c)
 *         and change your makefile accordingly.
 *
 ******************************************************************/

#include "ttmutex.h"

/* required by the tracing mode */
#undef  TT_COMPONENT
#define TT_COMPONENT  trace_mutex

/* ANSI C prevents the compilation of empty units.  We thus introduce */
/* a dummy typedef to get rid of compiler warnings/errors.            */
/* Note that gcc's -ansi -pedantic does not report any error here.    */
/* Watcom, VC++ or Borland C++ do however.                            */

typedef void _ttmutex_to_satisfy_ANSI_C_;

#ifdef TT_CONFIG_OPTION_THREAD_SAFE

LOCAL_FUNC void TT_Mutex_Create(TMutex * mutex)
{
	*mutex = (void *) -1;
	/* Replace this line with your own mutex creation code */
}

LOCAL_FUNC void TT_Mutex_Delete(TMutex * mutex)
{
	*mutex = (void *) 0;
	/* Replace this line with your own mutex destruction code */
}

LOCAL_FUNC void TT_Mutex_Lock(TMutex * mutex)
{
	/* NOTE: It is legal to call this function with a NULL argument */
	/*       in which case an immediate return is appropriate.      */
	if (!mutex)
		return;

	;	/* Insert your own mutex locking code here */
}

LOCAL_FUNC void TT_Mutex_Release(TMutex * mutex)
{
	/* NOTE: It is legal to call this function with a NULL argument */
	/*       in which case an immediate return is appropriate       */
	if (!mutex)
		return;

	;	/* Insert your own mutex release code here */
}

#endif							/* TT_CONFIG_OPTION_THREAD_SAFE */

/* END */
